noun
voice mail box
A system or storage location for voice messages, typically in a telephone or unified messaging context.
留守番電話のボイスメールボックスにメッセージが入っていた。
There was a message in the answering machine's voice mail box.
Spelling with interpuncts, sometimes used for clarity.
留守番電話 is the general term for an answering machine or voicemail system, while ボイスメールボックス specifically refers to the mailbox where messages are stored.
Loanword from English 'voice mail box'.